Spring.



A. C. MASON & A. T. STURT.

SPRING. I

APPLICATION FILED DEC. I4, 1914. 1,166,615. Patented Jan. 4, 1916.

' 2 SHEETS-SHEET I.

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a a 2. BY v & I A770 EI,

COLUMBIA PLANOKZRAPH Cov, WASHINGTON, D. c.

A. c. MASON & A. T. STURT.

SPRING.

APPLICATION FILED DEC. 14. 1914.

Patented Jan. 4;, 1916.

2 SHEETSSHEET 2.

COLUMBIA PLANOGRAPH CO.,WA5HINGTON, D. c,

Fig. 3 is ARTHUR c. ivrasoivenn ALFRED 1r. s'rua'r, or FLINT,niorr'rsanessrenons r0 CHEVROLET MOTOR COMFANY OF NEW YORK, INC., OF NEWYORK, N. Y., A CORPO- RATION OF NEW YORK.

Application filed December 14, 1914.. Serial no. 877,008.

cially adapted for use in vehicle construction.

One of the objects of this invention is to provide a flat spring witheach of its ends reinforced, and curved in opposite directions, soarranged that when in operation it has a neutral point of no deflectionbetween its ends. In use the ends are respectively fixed upon the axleand the carriage frame.

Other objects will appear from the following description and claims. 7

Referring to the drawings;

Figure 1 is a side view of one form of our spring. Fig. 2 is a plan viewof the same.

spring. Fig. 4 is a slde view still of another form of our spring. Fig.5 is a side view showing a conventional way of applying our spring tothe rear of a motor vehicle. Fig 6 is a side view showing a conventionalway of applying our spring to the front of a motor vehicle.

In the drawings, similar reference characters indicate like parts.

The spring consists of one or more continuous plates 10 running the fulllength of the same curved at each end in opposite directions as at 11and 12. These plates and the entire spring structure may be described assinuous in shape. The center plate or plates running the full length ofthe spring are reinforced at each end by progressively shorter platesreceding both in length and in thickness toward their ends in order thateach end of the'spring may be made strongest at its points of greatestbending moment. The reinforcing plates at the supported or resisting endare indicated by the numerals 20, 21 and22 and the reinforcing plates atthe load end are indicated by 30,31, 32, 33, 34, 35 and 86. Bolts 40 and41 are provided at each end respectively to hold the spring together,which bolts pass through holes 42 and 43 in the plates of the spring asshown. If desired a clamp yoke 44 may beused to Specification of LettersPatent.

a side view of another form of our sram G.

Patented J an. 4., 1916.

hold. the plates together as shown iii Figs. 1 and 2. This clamp is Ushaped in construction, and each end of the upright portions isscrew-threaded at 45 which screwthread co-acts with nuts 46 binding upona cross bar 47. A spring clip 50 may be used in the center of the springto hold the ends of the inner reinforcing plates in place.

The spring is constructed of any suitable material, such as steel.

In operation, the spring is used to support a load where the downwardforce (F is applied at one heavy end and acts against a resistance (R)at the other heavy end; (N) indicating the neutral point of nodeflection. It is contemplated that by this arrangement the stress andresistance will act in a direction approximatelyparallel to each otherat a distance apart equal to the span of the spring. When the load isapplied at (F),

vthe curves (0) and (0) are both straight-' ened, the deflection beingin opposite directions. I

Referring to Fig. 5, the spring in use may be bolted at at one end to arigid perch 61 on the rear axle housing and at the other end it isbolted at 62to a rigid bracket 63 on the frame 64 of the chassis.

Referring to Fig 6, the spring in use may be bolted at at one enddirectly to the beam of the front axle 71 and at the other end it isbolted at '72 to a bracket 7 on the 1 frame of the chassis at 64.

In practice we may use another spring parallel to the one shown andsecured rigidly at one end by bolts to the under side of the bracket 7 3and rigidly secured at its other end to the under side of the axle 71,thereby utilizing a pair of parallel springs in place of the singlespring as shown in Fig. 6.

IVhile we have shown certain features of our invention in theaccompanying drawings, it is to be understood that said drawings aremerely illustrative, and that we are not confined to what is there shownand herein described in connection therewith, ex-

cept as may be specificallyset forth in the claims. 7

Having now described our inventionwhat we claim as new and desire tosecure by Letters Patent, is

1. A spring consisting of a plate running through its entire length,each end of said plate being curved in opposite directions and providedat each end and at opposite sides thereof With reinforcing spring platesreceding toward the ends thereof.

2. A spring consisting of a main plate running through its entirelength, each end of said plate being curved in opposite directions andprovided at each end and at opposite sides thereof with reinforcingspring plates receding toward the ends thereof, the reinforcing platesat each end being secured together and to the main plate.

A spring construction consisting of a main plate running from end toend, shorter plates on opposite sides of each end of the main plateconstructed to take deflections in opposite directions, the main platehaving a neutral point intermediate the ends thereof.

4. A spring plate reinforced at each end on its opposite sides havingthe greatest bending moments near each end and provided with a neutralpoint between the 20 points of greatest bending moments.

In Witness whereof We have hereunto set our hands at the borough ofManhattan, city and State of New York, this 12th day of December, 1914.

ARTHUR o. MASON, ALFRED T. STURT.

In presence of FRED W. HoHENsEn, JOHN J. RANAGAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

